Science

Recent Questions

Science
49gm of sulphuric acid is present in 100ml aq. Solution .What is the molarity of sulphuric acid?

Science
When an earthquake event occurs, the energy propagates form the focal point outwards in all directions. Therefore, it is expected that if this energy can be recorded and quantified (direction and magnitude), we can determine the nature and location of the earthquake event. ...

Science
You are selected as deep-sea diver to test out a new submersible whose body is designed entirely from calcite (calcium carbonate) crystals. You are the captain of the first test dive in the Caribbean, off the west coast of Bahamas. You tested out the new Ultraviolet light ...

Science
a train takes 5 minutes to cover a distance of 3 km between two stations p and q . Starting from rest at p , it accelerate at a constant rate to a speed 40 km/h and maintain this speed untill it is brought to rest at q . If train takes 3 times as long to deaccelerate as it ...

Science
I need help in my project the question is- classify the mixture used in daily life - into solution,colliods and suspension and write their uses I need it today only I have to submit tomorrow

science
a1.5m high has a potential energy of 44.1 what is the mass

science
Which of the following statement is correct a. There are 7 principal electron energy levels. b.The second principal energy level has 4 sub-energy levels and contain a max. Of 8 electrons. c.The principal energy level N can have a max. Of 32 electrons. D. The 4s sub-energy ...

science
a loaf of bread has a mass of 2000g and a volume of 500 cm3. what is the density of the bread

science
A weight of 500kg is suspended by two chains 1.5m and 2.7mrespectively.the chains are attached to a beam that is 3.746m in length. The distance from the suspension to the ground being 900m. A.Calculate the load. B.the vertical and horizontal reactions at the suspension points.

Math literacy,geography, life science, economics .
Can I be a detective?

Science : physics
An electron travels in a circle of radius 6.1 m while under the influence of an unknown magnetic field, directed perpendicular to its velocity. If the particle makes 6.6 trillion complete revolutions per second, determine the magnitude of the magnetic field, in Tesla.

Geograhy, life science, maths literacy,business st
Which careers could suite this subjects

biological science
please discuss physiologically the importance of human tissues

Science
An aeroplane starts from rest with an acceleration of 3 ms-2 and takes a run for 35s before taking off. What is the minimum length of the runway with what velocity plane take off?

Science
10 examples for suspension

science
Calculate the number of ions present in 7.45 grams of potassium oxide. ( At.mass of K= 39u).

Science
An aeroplane taking off a field has a run of 500 meter.what is the acceleration and take off velocity if IT leaves the ground 10 seconds after the start.

science
Assume that nucles of f atom is a sphere of radius 5×10 cm. calculate thevdensity of f sphere

physical science
A sample of tin (Cp = 0.227 J/g•°C) is placed in a freezer. Its temperature decreases from 15.0°C to −10.0°C as it releases 543 J of energy. What is the mass of the sample? Round your answer to three significant figures.

Simple Science
In science, what is the meaning of the phrase "respective implication"?

Simple Science
Are there independent and dependent variables in observational studies?

science
for a particle executing simple harmonic motion the displacement is 8 cm at the instant the velocity is 6cm\sec and the displacement is 6 cm at the instant the velocity is 8 cm\sec calculate the amplitude?

Science
A force of 750 N keeps a 70-kg pilot in circular motion if he is flying a small plane at 35m/s in a circular path.What is the radius of the circular path?

Science
At a height of 9 meter from ground if a body of mass 2 kg has gravitational potential energy 36 Joule, what will be its final velocity with which it strikes the ground if it is dropped from there?

Science
1-A body is in motion with uniform acceleration of 4.5 kilometer per hour square find his value in CGS

Science
One scientist discovered a new theory on the evolution of stars. Why is it necessary for scientists all over the world to agree with the theory before it can be accepted? A) it make certain that the results are reliable B) to transform the results of the theory into law C) to ...

Math lit,History,Business studies,life science
What career should i go for that is really good with these subjects

Science
What is suspension?what is the 5 example of suspension?

Science
What is the suspension? What is the example of suspension? Give 10 example

science
please help me ..i need 5 example of household suspensions and give their uses

science
how to make and balance steps of reaction oF hno3 and cu by partial equation method

Science
A stone is dropped from a height of 49m and simultaneously another stone is thrown upwards from the ground with a speed of 40m/s.when and where do the two stones meet?

Science
How many kilograms of water can be evaporated at 100 degrees Celsius by the combustion of 470 litres of fuel oil whose heat of combustion is 37 MJ/Litre

science
where father seat in seesaw.tomake balance

science
Can you please give examples of the interaction of 4 spheres/subsystems of the earth.

Science
If a boy applies a force of 16N on an area of 16cm2,what will be the pressure produced by him?

Science
A stone was thrown upward with the innital velocity. (A)how for does it reach? (B)how long does it takes to reach this height? (C)calculate the final velocity.

Science
What is force

science
2 velocities each 5m/so are inclined at 60 degree .find their resultant

Science (Biology)
I think the answer is (e) but I'm not certain. In Drosophila melanogaster the genes for yellow body colour and white eye colour are linked this means that: a. They can produce only one phenotype b. They cannot separate c. They produce more parental types than recombinant types...

Science
A bullet initially moving with a velocity 20ms strikes a target and come to rest after penetrating a distance 10cm in target. Calculate the retardation caused by the target.

science
2KClO3 - 2KCl + 3O2 is formed ! now which kind of reaction is this ? and how can i say it is that particular reaction took place here?

Science
A cyclist move 4km in the east diraction then he turn to north and move 3km . Find displacement.

forensic science
Select the correct order of the GC components Column, Recorder, Carrier Gas, Flow Controller, Detector Recorder, Carrier Gas, Column, Detector, Injector port Injector port, Carrier Gas, Detector, Recorder Carrier Gas, Column Oven, Flow Controller, Detector Carrier Gas, Flow ...

science
Which of the following is created when the ice of a comet starts to melt into gases?

Science (physics)
A powerful motorcycle can accelerate from rest to 28 metre per second in only 4 seconds what is the average acceleration? How far does it travel in that time

science
A commertially available sample of H2SO4 is 15% of H2SO4 by weight. Density=1.10g. Calculate- 1. Molarity 2. Normality 3. Molality

Science
Darren the astronaut traveled to Planet U-427, a planet that is as big as Earth but is half the mass of Earth. What can you say about Darren's weight in this planet?

Science
A bullet blasts from the barrel of a gun upward in the vertical direction with an email initial speed of 700m/s .Find the maximum altitude reaches by this bullet and the time needed the reach it.

science
two isolated conducting spheres of different radius and different charges are first brought in contact and then separated what happens to the final charge on each of the sphere

sjps science
The parasite called plasmodium causes a disease known as

science
what volume of hydrogen peroxide needs to added to treat the system at 100ppm. available hydrogen peroxide is 35%

science
20ml solution containing 0.2g of an impure sample of h2o2 reacts with 0.316g of kmno4 in the presence of h2so4. Find the purity of h2o2 in the mixture.

science
How does the resistance of wire change when (a) its length is increased by 20 % (b) its diameter is increased by 20 %

Science
A mouse that eats grass is called a ......

Science
How is the temperature of the Earth affected by factors controlling the balance between incoming radiation and radiation emitted...?

science
a force of 8 newton acts on a body with a mass of 2.4 kg what is the acceleration

sjps science
The parasite called plasmodium causes a disease known as

sjps science
The synthetic fibre which contain the organic group similar to those which gives fruits their sweet smell is

sjps science
A basic oxide will be formed by the element

Math, science.
If two parallel lines are intersected by a transversal, prove that the bisectors of the interior angles on the same side of the transversal intersect each other at right angles.

sjps science
The manufacture of one of the following artificial fibres contributes to deforestation this fibre is

sjps science
Pasteurization is a method used to preserve milk by

sjps science
Mcpa and metachlor are

sjps science
Mcpa and metachloe are

forensic science
What type of substance is the mobile phase in gas chromatography? a polar liquid a nonpolar liquid a mixture of two liquids to create the correct polarity a polar gas an inert gas like nitrogen my answer is an insert gas like nitrogen

Science
The volume of co2 gas produced at NTP when 25 gram of caco3 is heated

Science
Find the wavelength of radiation required to exite an electron in the ground level of Li2+ to the third energy level

science
ruthie walks 45 m east, and then moves 40 m west. if east is chosen as the positive direction, what is ruthie's resultant displacement?

Eng, Bengali, maths, science, social science
A rectangular swimming pool measures 15 meters by 10 meters. How wide must a concrete walk around the pool be if the walk is to cover an area of 116 square meters

science
Why is avogadro's law reffered to as hypothesis

science
To what temperature must a mass of Nitrogen at 0°c,be heated so that both its volume and pressure will be doubled?

Science
A man runs 100.0 metre in 10.3 seconds find his average speed up to appropriate significant figures.

Science
A small toy car moves around a circular track onces in every 8s. The radius of track is 3m. Find the speed of car.

Science
A body of mass 10kg is moving with velocity 10m/sec.The work done to stop the body is : A) 500J B)-500J C)1000J D)-1000J How to calculate the answer?

forensic science
Quantization is Interaction of electromagnetic radiation and matter at discrete energy levels The ion separator in a mass spectrometer Chemical ionization The bombardment of an analyte by a stream of energetic electrons Inelastic scattering My answer is the bombardment 3 amswer

Social Studies
I need to write a paper on a transgender role model. It can be someone in the field of art, science, math, or business leadership. Any suggestions?

physical science
I have 50 grams of an isotope. How much of it will i have in 10 years if it has a half life of 10 years

Science
Write the balanced chemical reactions using the appropriate symbols​

Science
Which of the following does NOT describe a change in velocity? A. Your mom drives 60 miled per hour on the freeway.*** B. A kite flies up into the sky, then starts falling down again. C. Your puppy is running in circles around a large, circular table D. A boy riding a bicycle ...

science
12gm of potassium sulphate is dissolved in 25 gm of water at 60 degree. what is solubility in water at that temperature?

Science
You Add a g to My word and I disappear so what word AM I?

science
What is mole?

science chemistry7:Caba-og elementary school
what is the 70% alcohol solute and solvent?

Forensic science
The_____________spectrum is so complex it is considered to be unique: Visible Ultraviolet Infrared Microwave Fluorescence

science
Any place inside a hachure line is a _____ elevation than the hachure line.

science
Is there any effect in the mass of an atom if it becomes negatively charged? I know that atomic mass and mass number are two different things but the change in electrons (although may not affect the mass number) may affect the atomic mass, wouldn't it?

phisical science
what is the role of mass in newtons second law?

Agricultural science and mathematical literacy
Which course can i do with Agricultural science,Life science,Geography,Life Orientation and Mathematical literacy?

Geography, life science, maths lit,history
Research for careers of the above subjects, it happened that i want to be a Doctor, but m not sure about this subjects M in grade 11 this year

Geography, life science, maths lit,history
Research for careers of the above subjects, it happened that i want to be a Doctor, but m not sure about this subjects

science - physics
A car us moving with a speed of 60km per h . suddenly the breaks are applied , and the car brought to rest in 10 sec. calculate the accelaration of the car.

Science
A body travells along the circular path of radius 70m after travelling half a revolution in 20sec find avrage velocity and avrage speed

Science
An aluminium cube measures 10 cm on each side. The density of aluminium is 2.7g/cm–³. What is the cube's mass? I need help regarding the formula.

Science
Madeira uses the water cycle to generate electrical power but this becomes a problem during the summer. What is the problem and explain the renewable energy solution.

Science
An aluminium cube measures 10 cm on each side. The density of aluminium is 2.7g/cm–³. What is the cube's mass? I need help regarding the formula.

Science
How does the albedo effect climate and can drive positive feedback

Science
Use the terms solar, kinetic, electrical and potential energy gravitational energy to explain energy transformations used for renewable energy systems

physcis
name any 5 models present in national science center related to force and laws of motion

Science
At a distance L equals to 400m from the traffic light, brakes are applied to a locomotive moving at a velociy VEquals to 54 km/hr. Determine the position of the locomotive relative to the traffic light l minute after application ofthe brakes if its acceleration is -0.3m/sec..

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